synchronize stuff and add io redirection for log file creation in SimpleTest
Merge branch 'master' of https://github.com/srang/devilFiler

# By Sam Rang
# Via Sam Rang
* 'master' of https://github.com/srang/devilFiler:
  Synchronized DBuffer methods, removed specific sync blocks, fixed bugs in updating file descriptor

Conflicts:
	src/test/SimpleTest.java